US5643148A - Sporting and exercising device having a foot receiving portion and an anticollapse spring portion - Google Patents

Sporting and exercising device having a foot receiving portion and an anticollapse spring portion Download PDF

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Publication number
US5643148A
US5643148A US08/678,508 US67850896A US5643148A US 5643148 A US5643148 A US 5643148A US 67850896 A US67850896 A US 67850896A US 5643148 A US5643148 A US 5643148A
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United States
Prior art keywords
plastic strap
spring layer
bodies
shock absorbing
sporting
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Expired - Lifetime
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US08/678,508
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English (en)
Inventor
Denis Naville
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ESTABLISHMENT AMRA
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Denis Naville SA
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Assigned to DENIS NAVILLE S.A. reassignment DENIS NAVILLE S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NAVILLE, DENIS
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Publication of US5643148A publication Critical patent/US5643148A/en
Assigned to ESTABLISHMENT AMRA reassignment ESTABLISHMENT AMRA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DENIS NAVILLE, S.A.
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B25/00—Stilts or the like
    • A63B25/10—Elastic bouncing shoes fastened to the foot
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/181—Resiliency achieved by the structure of the sole
    • A43B13/183—Leaf springs
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/181—Resiliency achieved by the structure of the sole
    • A43B13/184—Resiliency achieved by the structure of the sole the structure protruding from the outsole

Definitions

  • the present invention relates to a sporting and exercising device comprising an upper foot receiving portion and a lower spring portion.
  • U.S. Pat. No. 5,205,798 granted to Gregory Lekhtman on Apr. 27, 1993 describes a sporting and exercising device comprising a foot receiving portion and a spring portion detachably attached to the bottom face of the foot receiving portion.
  • the spring portion comprises an upper spring layer arched upwardly, a lower spring layer arched downwardly, and an intermediate, substantially elastic plastic strap.
  • a first end of the plastic strap is connected to both a first end of the upper spring layer and a first end of the lower spring layer.
  • a second end of the plastic strap is connected to both a second end of the upper spring layer and a second end of the lower spring layer.
  • a major drawback of the sporting and exercising device of U.S. Pat. No. 5,205,798 is that the spring portion collapses after about 7 centimeters (cm) (out of about 13 cm) of deformation by compression, that is it lacks smooth, growing elasticity. This reduces the ability to absorb increasing higher pressures, reduces the available bouncing power and makes the sporting and exercising device noisy.
  • the main object of the present invention is therefore to eliminate the above described drawback of the prior art.
  • a sporting and exercising device comprising an upper foot-receiving portion, and a lower spring portion fastened to the foot-receiving portion.
  • the spring portion comprises:
  • an upper spring layer arched upwardly and comprising first and second opposite ends;
  • a lower spring layer arched downwardly and comprising first and second opposite ends
  • first and second shock absorbing means mounted longitudinally remote from each other between the upper spring layer and the intermediate member
  • third and fourth shock absorbing means mounted longitudinally remote from each other between the lower spring layer and the intermediate member.
  • the first, second, third and fourth shock absorbing means prevent the spring portion to collapse after a certain degree of deformation by compression has been reached.
  • the intermediate, substantially elastic elongate member comprises a plastic strap having a top face and a bottom face.
  • the first shock absorbing means comprises a first body made of resilient material and mounted on the top face of the plastic strap proximate the first ends of the upper spring layer and the plastic strap;
  • the second shock absorbing means comprises a second body made of resilient material and mounted on the top face of the plastic strap proximate the second ends of the upper spring layer and the plastic strap;
  • the third shock absorbing means comprises a third body made of resilient material and mounted on the bottom face of the plastic strap proximate the first ends of the lower spring layer and the plastic strap;
  • the fourth shock absorbing means comprises a fourth body made of resilient material and mounted on the bottom face of the plastic strap proximate the second ends of the lower spring layer and the plastic strap.
  • first, second, third and fourth bodies are generally elongate, transversal bodies
  • first, second, third and fourth generally elongate, transversal bodies each comprise first and second opposite and generally coplanar extensions each having a free edge formed with a notch therein;
  • the plastic strap comprises four pairs of spaced apart, generally angular integral tabs to mount the first, second third and fourth generally elongate transversal bodies, respectively, onto the top and bottom faces of the plastic strap;
  • each tab has a first section extending from the top or bottom face of the plastic strap and a second section generally parallel to but spaced apart from the top or bottom face of the plastic strap, and extending toward the other tab of a same pair;
  • the first section of the tabs has a width corresponding to a width of the notches
  • each generally elongate, transversal body is inserted between the second section of one tab of a corresponding pair and the top or bottom face of the plastic strap, while the second extension of the generally elongate, transversal body is inserted between the second section of the other tab of the corresponding pair and the top or bottom face of the plastic strap, until the first sections of the tabs fit into the notches of the first and second extensions of the generally elongate, transversal body, respectively.
  • the plastic strap comprises a first transversal series of holes and a second transversal series of holes;
  • the first and third bodies are overmolded on the top and bottom faces of the plastic strap, respectively, over the holes of the first series whereby resilient material of the first and third bodies fills the holes of the first series to interconnect the first and third bodies and retain said first and third bodies on the top and bottom faces of the plastic strap, respectively;
  • the second and fourth bodies are overmolded on the top and bottom faces of the plastic strap, respectively, over the holes of the second series whereby resilient material of the second and fourth bodies fills the holes of the second series to interconnect the second and fourth bodies and retain said second and fourth bodies on the respective top and bottom faces of the plastic strap.
  • the lower spring layer is made of a sturdy, generally flexible plastic material and comprises a bottom face
  • the sporting and exercising device further comprises a sole mounted to the bottom face of the lower spring layer and formed with an antislip bottom tread.
  • FIG. 1 is a perspective, exploded view of a sporting and exercising device in accordance with the present invention, comprising a foot-receiving portion and a spring portion;
  • FIG. 2 which is labelled as prior art, is a graph illustrating the evolution of the resistance (force in Newtons) of the spring portion to compression as a function of the deformation (cm) by compression of a sporting and exercising device as described in U.S. Pat. No. 5,205,798;
  • FIG. 3 is a perspective, enlarged view of a generally elastic plastic strap of the spring portion of the device of FIG. 1, comprising resilient shock absorbing bodies;
  • FIG. 4 is a schematic diagram illustrating a first method of mounting the resilient shock absorbing bodies onto the plastic strap of FIG. 3;
  • FIG. 5 is a perspective, partial view of the plastic strap of FIG. 3, with a resilient shock absorbing body mounted thereon in accordance with the first method;
  • FIG. 6 illustrates a transversal series of holes made in the plastic strap for mounting the shock absorbing bodies in accordance with a second method (overmolding);
  • FIG. 7 is a perspective, partial view of the plastic strap with shock absorbing bodies mounted thereon in accordance with the second method
  • FIG. 8 is an elevational transversal cross sectional view of the plastic strap with shock absorbing bodies mounted thereon in accordance with the second method.
  • FIG. 9 is a graph illustrating the evolution of the resistance (force in Newtons) of the spring portion to compression as a function of the deformation (cm) by compression of a sporting and exercising device in accordance with the present invention.
  • FIG. 1 is a perspective, exploded view of a sporting and exercising device in accordance with the present invention.
  • the sporting and exercising device is generally identified by the reference 1.
  • the device 1 comprises two major parts: an upper foot receiving portion 2 and a lower spring portion 3.
  • the foot receiving portion 2 is formed of a boot 4.
  • the boot 4 comprises a lower shell 5 with a bottom 6, and an upper shell 7 hingedly connected to the lower shell 5 through a pair of fasteners of which one 8 is shown.
  • the lower 5 and upper 7 shells are made of molded plastic material.
  • the boot 4 further includes a padded inner boot 90 inserted in the hingedly interconnected shells 5 and 7. This type of boot, currently used in the fabrication of ice skates, is well known to those of ordinary skill in the art and accordingly will not be further described.
  • the spring portion 3 comprises an upper spring layer 9, a lower spring layer 10, and an intermediate spring rate and weight adjusting elongate plastic strap 11.
  • the upper spring layer 9 is arched upwardly and the lower spring layer 10 is arched downwardly as illustrated in FIG. 1. Both the upper and lower spring layers 9 and 10 are made of a sturdy, generally flexible plastic material.
  • the strap 11 is made of a substantially elastic plastic material and is interposed between the upper and lower spring layers 9 and 10. To increase the spring resistance and/or to support a greater weight, the cross sectional area of the plastic strap 11 is increased. Alternatively, to reduce the spring resistance and/or to support a smaller weight, the cross sectional area of the plastic strap 11 is reduced.
  • the plastic strap 11 has a first end provided with a generally arrow-shaped integral connecting member 12, and a second end opposite to the first end and provided with a generally arrow-shaped integral connecting member 13.
  • the arrow-shaped connecting member 12 is formed with transversal rear grooves 14 and 15 situated on the opposite top and bottom faces of the plastic strap 11, respectively.
  • the arrow-shaped connecting member 13 is formed with transversal rear grooves 16 and 17 situated on the opposite top and bottom faces of the plastic strap 11.
  • the upper spring layer 9 is bent to insert its two opposite ends 18 and 19 into the grooves 14 and 16, respectively, and the lower spring layer 10 is also bent to insert its two opposite ends 20 and 21 into the grooves 15 and 17, respectively.
  • the plastic strap 11 is then tensioned and stretched by the spring action produced by the resiliency of the arched upper and lower spring layers 9 and 10.
  • the end 18 of the upper spring layer 9 comprises an indent 91 fitted into a corresponding indent 22 of the groove 14.
  • the end 19 of the upper spring layer 9 comprises an indent 23 fitted into a corresponding indent 24 of the groove 16.
  • the end 20 of the lower spring layer 10 also comprises an indent 24 fitted into a corresponding indent (not shown) of the groove 15.
  • the end 21 of the lower spring layer 10 comprises an indent 25 fitted into a corresponding indent (not shown) of the groove 17.
  • the arrow-shaped connecting member 12 connects one end of the plastic strap 11 with the ends 18 and 20 of the upper and lower spring layers 9 and 10, while the arrow-shaped connecting member 13 connects the other end of the plastic strap 11 with the ends 19 and 21 of the upper and lower spring layers 9 and 10.
  • the mutually mating indents will of course prevent lateral movement of the ends 18, 19, 20 and 21 in the grooves 14, 16, 15 and 17, respectively, to thereby hold the ends 18, 19, 20 and 21 in the grooves 14, 16, 15 and 17, respectively.
  • nipples 26 and 27 may extend from the bottom face of the upper spring layer 9 at the end 18 thereof.
  • nipples 28 and 29 may extend from the bottom face of the upper spring layer 9 at the end 19 thereof
  • nipples 30 and 31 may extend from the top face of the lower spring layer 10 at the end 20 thereof
  • nipples 32 and 33 may extend from the top face of the lower spring layer 10 at the end 21 thereof.
  • the spring portion 3 is mounted onto the boot 4 by detachably fastening the upper spring layer 9 to the bottom 6 of the lower shell 5 by means, for example, of appropriate screw fasteners (not shown) passing through openings 36 and 37 of the upper spring layer 9 and corresponding openings (not shown) in the bottom 6 of the lower shell 5 of the boot 4.
  • a sole 38 is screwed to the bottom face of the lower spring layer 10.
  • the sole 38 has an anti-slip bottom tread to prevent accidents caused by slipping of the device 1 on the ground.
  • the nipples 26-33 will abut the respective edge surfaces such as 34 and 35 of the generally arrow-shaped connecting members 12 and 13 to prevent lateral movement of the ends 18, 19, 20 and 21 in the grooves 14, 16, 15 and 17, respectively, when a small lateral force is applied.
  • this strong force will overcome the restraint of the nipples 26-33 and will withdraw the indents of the ends 18 and 19 of the upper spring layer 9 and the ends 20 and 21 of the lower spring layer 10 from the indents of the grooves 14, 16, 15 and 17, respectively, to automatically disassemble the spring portion 3 and prevent the user to fall, and to twist and/or sprain his ankles.
  • the user Upon disassembly of the spring portion 3, the user will step onto the bottom face of the upper spring layer 9.
  • FIG. 2 is a graph illustrating the evolution of the resistance (force in Newtons) of the spring portion 3 to compression as a function of the deformation (cm) by compression of a sporting and exercising device as described in U.S. Pat. No. 5,205,798, having a plastic band 11 60 cm wide.
  • the maximal resistance of the spring portion 3 is found at about 7 cm of deformation by compression. From this point, the resistance of the spring portion 3 gradually reduces as the deformation by compression increases.
  • the spring portion 3 collapses at 7 cm (out of about 13 cm) of deformation by compression, the spring portion 3 lacks smooth, growing elasticity. This reduces the ability of the sporting and exercising device to absorb increasing higher pressures. This also reduces the available bouncing power and makes the sporting and exercising device noisy.
  • the spring portion 3 of the present invention is provided with shock absorbing means 50-53.
  • these shock absorbing means 50-53 comprise four bodies of resilient material such as rubber material and resilient foam material. As illustrated in FIGS. 1 and 3:
  • the shock absorbing means 50 comprises a first elongate transversal resilient shock absorbing body 39 mounted on the top face of the plastic strap 11 proximate a first end thereof and the end 18 of the upper spring layer 9;
  • the shock absorbing means 51 comprises a second elongate transversal resilient shock absorbing body 40 mounted on the top face of the plastic strap 11 proximate a second end thereof and the end 19 of the upper spring layer 9;
  • the shock absorbing means 52 comprises a third elongate transversal resilient shock absorbing body 41 mounted on the bottom face of the plastic strap 11 opposite to the body 39, i.e. proximate the first end of the plastic strap 11 and the end 20 of the lower spring layer; and
  • the shock absorbing means 53 comprises a fourth elongate transversal resilient shock absorbing body 42 mounted on the bottom face of the plastic strap 11 opposite to the body 40, i.e. proximate the second end of the plastic strap 11 and the end 21 of the lower spring layer 10.
  • the shock absorbing bodies 39 and 40 are mounted longitudinally remote from each other between the upper spring layer 9 and the plastic strap 11.
  • the shock absorbing bodies 41 and 42 are mounted longitudinally remote from each other between the lower spring layer 10 and the plastic strap 11.
  • the bodies 39-42 are generally semi-elliptical in cross section and have rounded ends. They can be made of resilient rubber material or resilient foam material such as polyurethane or other plastics.
  • FIGS. 4 and 5 illustrate a first method of mounting the resilient bodies 39-42 onto the plastic strap 11.
  • each body 39-42 comprises two opposite and generally coplanar extensions 43 and 44 having respective free edge 45 and 46 formed with notches 60 and 61 therein.
  • the plastic strap 11 comprises four pairs of spaced apart, generally angular integral tabs such as 62 and 63 for mounting the bodies 39-42, respectively, onto the top and bottom faces of the plastic strap 11.
  • Each tab 62,63 has a first section 64,65 extending generally perpendicular from the top or bottom face 66 of the plastic strap 11 and a second section 67,68 generally parallel to but spaced apart from the top or bottom face 66 of the plastic strap 11, and extending toward the other tab 63,62 of the same pair.
  • the first sections 62 and 63 of the tabs 63 and 62 have a width corresponding to a width of the notches 60 and 61 whereby, in operation, the extension 43 of each body 39-42 is inserted between the second section 67 of the tab 62 of a corresponding pair and the top or bottom face 66 of the plastic strap 11, while the extension 44 of the body 39-42 is inserted between the second section 68 of the other tab 63 of said corresponding pair and the top or bottom face 66 of the plastic strap 11, until the first sections 64 and 65 of the tabs 62 and 63 fit into the notches 60 and 61 of the extensions 43 and 44 of the body 39-42.
  • the bodies 39-42 may be formed with a bottom longitudinal groove such as 69 (FIGS. 4 and 5) to increase, or more generally adjust their flexibility.
  • a transversal series of three holes 47, 48 and 49 are made through the plastic strap 11 (FIG. 5) and the pair of opposite resilient bodies 39 and 41 are simultaneously overmolded on the opposite top and bottom faces of the strap 11 (FIG. 7).
  • Resilient material of the bodies 39 and 41 fill the holes 47-49 (FIG. 8) to interconnect the bodies 39 and 41 and retain the latter bodies on the corresponding top and bottom faces of the strap 11.
  • the bodies 39-42 are generally semicylindrical with rounded ends.
  • the resilient shock absorbing bodies 39-42 progressively absorbs compression forces and corresponding energy is accumulated and stored in the resilient bodies 39-42 and is subsequently released to increase the bouncing power of the sporting and exercising device;
  • each shock absorbing body (for example shock absorbing body 39) create a progressively increasing lever force on the end section of the corresponding spring layer (for example spring layer 9) between the shock absorbing body (for example shock absorbing body 39) and the corresponding connecting member (for example arrow-shaped connecting member 12) whereby the flexibility of this end section contributes to increase the resistance to compression of the spring portion 3; and
  • the sporting and exercising device is more quiet whereby it can also be used indoors, for example in fitness classes;
  • FIG. 9 shows that the resistance (force in Newtons) of the spring portion 3 to compression continues to increase after the threshold of 7 cm of deformation by compression has been reached.
  • the present invention therefore eliminates the major drawback of a spring portion that collapses as soon as a deformation by compression of about 7 cm has been reached.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Toys (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
US08/678,508 1996-01-10 1996-07-09 Sporting and exercising device having a foot receiving portion and an anticollapse spring portion Expired - Lifetime US5643148A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002166939A CA2166939C (fr) 1996-01-10 1996-01-10 Accessoire de pratique pour le sport et l'exercice constitue d'un repose-pied et d'une section a ressort non deformable
CA2166939 1996-01-10

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US5643148A true US5643148A (en) 1997-07-01

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US08/678,508 Expired - Lifetime US5643148A (en) 1996-01-10 1996-07-09 Sporting and exercising device having a foot receiving portion and an anticollapse spring portion

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Country Link
US (1) US5643148A (fr)
EP (1) EP0873160B1 (fr)
JP (1) JP2000502925A (fr)
AT (1) ATE196997T1 (fr)
AU (1) AU1591997A (fr)
CA (1) CA2166939C (fr)
DE (1) DE69703341D1 (fr)
WO (1) WO1997025108A1 (fr)

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WO1998055185A3 (fr) * 1997-06-05 1999-04-08 Jjco Inc Chaussure d'exercice
US6318001B1 (en) * 2000-07-20 2001-11-20 Yan-Yee Lee Springy sports shoe
US6436012B1 (en) 1998-11-19 2002-08-20 Christophe Ebersberg Sporting and exercising device having a spring portion with stringed/clipped shock absorbers
US6447429B1 (en) * 2001-10-17 2002-09-10 Shu-Yi Chen Body weight driven treadmill
US6551225B1 (en) * 2000-01-24 2003-04-22 Ron Richard Romero Flexible hemispherical exercise
US6558265B1 (en) 2000-03-06 2003-05-06 Bruce Middleton Scalable high-performance bouncing apparatus
US20050075182A1 (en) * 2000-03-06 2005-04-07 Bruce Middleton Scalable high-performance bouncing apparatus
US20060065499A1 (en) * 2004-09-27 2006-03-30 Nike, Inc. Impact attenuating and spring elements and products containing such elements
US20060064900A1 (en) * 2004-09-27 2006-03-30 Nike, Inc. Impact attenuating devices and products containing such devices
US20070119074A1 (en) * 2004-09-27 2007-05-31 Nike, Inc. Impact-attenuation members and products containing such members
US20070167287A1 (en) * 2006-01-13 2007-07-19 Wei-Tzu Wen Retractable gymnastic backboard
US20070277395A1 (en) * 2006-06-05 2007-12-06 Nike, Inc. Impact-attenuation members with lateral and shear force stability and products containing such members
US20080016720A1 (en) * 2006-07-21 2008-01-24 Nike, Inc. Impact-attenuation systems for articles of footwear and other foot-receiving devices
US20080214364A1 (en) * 2006-10-30 2008-09-04 Maresh Joseph D Ellipical exercise apparatus with flexible unitary force imparting member
US20080256830A1 (en) * 2006-03-30 2008-10-23 Edward Frederick Adjustable Shock Attenuating Means for Footwear and Footwear Using the Same
US20090193687A1 (en) * 2006-03-07 2009-08-06 Jung Bae Kim Health Shoes
US20110092339A1 (en) * 2008-01-31 2011-04-21 Jeffrey David Stewart Exercise apparatuses and methods of using the same
US20110124473A1 (en) * 2009-11-17 2011-05-26 Ryan Michael Kole Lower leg and foot exercise device
US20110224049A1 (en) * 2008-10-10 2011-09-15 Gerrard Farrell Foot exercise device
CN102920095A (zh) * 2012-11-20 2013-02-13 吴伟健 新型太空鞋
US20140187394A1 (en) * 2012-12-27 2014-07-03 Nautilus, Inc. Exercise device
US20140349818A1 (en) * 2013-05-27 2014-11-27 Mario Green Novel exercise and sporting apparatus
US20150040432A1 (en) * 2013-08-07 2015-02-12 Nike, Inc. Article of footwear with a midsole structure
US9247784B2 (en) 2012-06-22 2016-02-02 Jeffrey David Stewart Wearable exercise apparatuses
US20160368341A1 (en) * 2014-02-24 2016-12-22 ThyssenKrupp Federn und Stabilisatoren GmbH Suspension-spring unit for a vehicle chassis
ES2619122A1 (es) * 2015-12-23 2017-06-23 Expresio Estudio Creativo, S.L. Dispositivo deportivo para hacer ejercicio y sus componentes
US20180104532A1 (en) * 2015-06-26 2018-04-19 Total Gym Fitness, Llc Foot platform and rebounding device and method of using same
US20180296936A1 (en) * 2015-07-27 2018-10-18 Roman Dill Play equipment, in particular for interior spaces and small children
USD855704S1 (en) * 2016-05-31 2019-08-06 Elmas S.R.L. Spring device for gymnastics and sports
US10383390B2 (en) 2015-08-27 2019-08-20 National Taiwan University Of Science And Technology Sole cushioning module
US11122859B2 (en) * 2019-07-23 2021-09-21 Upright Manufacturing (Shenzhen) Ltd. Bouncing shoe-holder
USD965083S1 (en) * 2021-07-22 2022-09-27 Ying Wang Exercise stepper

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CA2207199A1 (fr) * 1997-06-05 1998-12-05 Jjco Inc. Poste exerciseur

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US3219358A (en) * 1963-07-29 1965-11-23 Joseph A Hagner Skates having resilient runner
US3377722A (en) * 1967-03-13 1968-04-16 Billy N. Downing Bouncing shoes
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US4534124A (en) * 1982-09-14 1985-08-13 Joachim Schnell Spring-action running and jumping shoe
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Cited By (82)

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Publication number Priority date Publication date Assignee Title
WO1998055185A3 (fr) * 1997-06-05 1999-04-08 Jjco Inc Chaussure d'exercice
US6436012B1 (en) 1998-11-19 2002-08-20 Christophe Ebersberg Sporting and exercising device having a spring portion with stringed/clipped shock absorbers
US6551225B1 (en) * 2000-01-24 2003-04-22 Ron Richard Romero Flexible hemispherical exercise
US6558265B1 (en) 2000-03-06 2003-05-06 Bruce Middleton Scalable high-performance bouncing apparatus
US20050075182A1 (en) * 2000-03-06 2005-04-07 Bruce Middleton Scalable high-performance bouncing apparatus
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CA2166939A1 (fr) 1997-07-11
EP0873160A1 (fr) 1998-10-28
EP0873160B1 (fr) 2000-10-18
ATE196997T1 (de) 2000-11-15
JP2000502925A (ja) 2000-03-14
AU1591997A (en) 1997-08-01
WO1997025108A1 (fr) 1997-07-17
DE69703341D1 (de) 2000-11-23
CA2166939C (fr) 2004-11-30

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